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M4 highway improvements

Surfacing  Pic

Work nears completion on Junction 17 Improvements

The majority of the overnight road closures have now been completed on Junction 17 to allow for resurfacing and lining works to take place. A final road closure is planned for the 1st March to pick up the final elements of lining and high friction installation. The Traffic Signals are due to be installed in early March, with completion expected soon after.

Schedule of Closures

Thursday 1st March 2018 - Closure of the West side of the roundabout, involving the following roads

  • A350/A429 Northbound
  • M4 Junction 17 Westbound On Slip
  • M4 Junction 17 Westbound Off Slip
  • M4 Junction 17 Eastbound Off Slip

Due to the nature of the work there is potential for change in the programme, daily updates will be provided on this website and also on our twitter feed @WiltshireRoads

Traffic Management Plans (M4 Junction 17 Improvements)

FAQs


The M4 junction 17 improvements scheme intends to reduce existing congestion on the M4 off-slips and prevent traffic from backing up onto the M4 motorway. The scheme seeks to introduce traffic signals on to two of the arms (the M4 off-slips in both directions) and the corresponding circulatory carriageway. Close

The main works contract is currently expected to commence around August 2017 and will take approximately 6 months to complete.

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The scheme cost of £1.46m will be funded by Highways England (who operate the M4) and the Local Growth Fund, which is administered by the Swindon and Wiltshire Local Enterprise Partnership.

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A policy of improvements to junction 17 has been included in the council’s development plans, including the current Wiltshire Core Strategy, for a number of years. These have been subject to extensive public consultation.

Given the above and the fact than no planning permission is required for the scheme, no formal public consultation has been undertaken.

The full business case is available for viewing from the Swindon and Wiltshire Local Enterprise Partnership.

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The congestion and safety issues which the schemes are designed to address are a reality now and will worsen with increasing traffic and economic and development growth.

Jointly procuring and delivering the schemes provides efficiencies and better value for money.

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Appropriate and safe traffic management measures will be set up to reduce the impact of scheme construction as much as possible. Inevitably, however, there will be some disruption to traffic especially at peak times.

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We have designed a traffic signal control system that controls traffic on the gyratory and the stop lines at the top of the offslips. The reason for this part signalisation scheme was to reduce the extent to which traffic backed up along the offslips onto the motorway mainline at peak times, reducing the number of accidents occurring there.

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We have designed a traffic signal control system that controls traffic on the gyratory and the stop lines at the top of the offslips. The remit for this part signalisation scheme was to reduce the extent to which traffic backed up along the offslips onto the motorway mainline at peak times, reducing the number of accidents occurring there.

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Latest tweets

2 DAYS AGO

There are no planned road closures on junction 17 of the M4 tonight.

19 Feb 2018 17:00

2 DAYS AGO

@sue_1206 Hi, not quite complete we still need to finish a few more bits but there aren't anymore night time closures planned at the moment.

19 Feb 2018 16:59

5 DAYS AGO

Work will continue this evening on Junction 17 of the M4. The following roads will be closed at 8pm and reopen at 6… https://t.co/CqVlzLtfs4

16 Feb 2018 15:15

5 DAYS AGO

@thejoeywessex Hi, Sorry for the delay you experienced on the A350 today. Unfortunately we have been delayed due to… https://t.co/qIG5RVD9S9

16 Feb 2018 14:57

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Construction Drawing

M4 - Junction 17 Highway Improvements

Construction Drawings

Junction 17 (1) PDF (542kb)
Junction 17 (2) PDF (529kb)
Last updated: 20 February 2018 | Last reviewed: 20 February 2018